diff --git a/pkgs/development/python-modules/samplerate-ledfx/default.nix b/pkgs/development/python-modules/samplerate-ledfx/default.nix
index cb6fc5443fcb..13f342d05c5f 100644
--- a/pkgs/development/python-modules/samplerate-ledfx/default.nix
+++ b/pkgs/development/python-modules/samplerate-ledfx/default.nix
@@ -56,6 +56,11 @@ buildPythonPackage (finalAttrs: {
     pytestCheckHook
   ];
 
+  disabledTestPaths = [
+    # timing sensitive: AssertionError: Expected speedup > 1.0, got 0.68x
+    "tests/test_threading_performance.py::test_conditional_gil_release_large_data_threading"
+  ];
+
   pythonImportsCheck = [ "samplerate" ];
 
   meta = {